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Assuming Ionian mode and T stands for tonic and L for leading tone then there's nothing modal about this that isn't also in a simple major scale. If it sounds modal it's because the 4 is not a leading tone to 5 (easily remedied with a secondary dominant giving you a #4), but that would also imply possible modulation. If I've misread your shorthand please correct me. To enhance the modal sound use more subdominant to dominant progressions or flat your leading tone or use a different mode. Most people who are savvy enough to hear a flat seventh will assume some mode is being used, hence "it sounds modal."

We have:________________6______________5_____4___4__4______4_______3_____________3_______________________2_________________________T___T__T.___________________________L

The vertical movement is just to make it easier for the eye.In pure numbers this theme is: 4 3 4 4 5 6 4 3 2 T L T T.

Where:T is the tonic. The first tone in a selected scale.In my second post I selected G as the tonic.2 is the second diatonic tone in the scale.3 is third.. and so on up to seven.Seven is also called leading tone or L (not sure this is correct, because we dont always are half-step from tonic).

So if we select G as tonic, we get:

C B C C D E C B A G F G G

In G-clef score having selected G as tonic, this theme would look like:

Welcome to the forums. If you want any of us to take even a bit of this seriously, then use standard staff notation, with intended pitches and note values. There is a universally accepted set of symbols to represent music - let's use them.

Ed

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In music, everything one does correctly helps everything else.